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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Whittaker, H. A. (Harold Arthur),
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1925
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Whittaker, H. A. (Harold Arthur), - American Public Health Association. Sanitary Engineering Section.
    Publication info: Boston, [The Association], [1920]
    Holding Institution: Cornell University Library